Shoemaker&#39;s jack.



Patantad Dec. 3.0, i902.

l. HOLZM'ARK. suoemkzas JACK.

(Application filed Dec. 13, 1901.)

(No Modl.)

1n: man's PETERi cc. xam-mac" wnsnmmon o c FFICE.

PATENT ISAAC HOLZMARK, on ST. LOUIS, MISSOURI.

SHOEMAKERS JACK.

SPECIFICATION forming part of Letters Patent No. 716,896, dated December 30, 1902.

Application filed December 13, 1901. $erial No. 85,742. (No models I vented certain new and useful Improvements and it consists of the novel features herein shown, described, and claimed. I

My object is to construct an improved shoemakers jack, and myimproved .shoemakers jack comprises a base adapted to be rigidly mounted,a trunnion extending upwardly from the base and-having a groove around its upper end, a standard having a bore in its lower end to receive said trunnion and having a slot in its upper end, a screw inserted through said standard into said groove to hold the standard in position, a tongue mounted in said slot and provided with an angular slotted transverse opening, a pi n insertedthrough said standard and through said opening to hinge the tongue to the standard, a stop extending upwardly from the standard into said slot to engage said tongue, a coupling extend ing upwardly from said tongue and having a bore from its upper end, a flange extending downwardly from said coupling around the upper end of said standard, a shoe-last shank adapted to fit against the upper end of said coupling, a trunnion extending downwardly from said shoe-last shank into the bore in said coupling and having a groove around its lower end, a screw inserted through said coupling into said groove to hold the shank rotatably in position, ears extending backwardly from the upper end of said coupling, a thumb-screw inserted through said ears as required to form a clamp to hold said trunnion against rotation in said coupling, a shoe-last adapted to be mounted upon the upper end of said shoe-last shank, an ear extending forwardly from said shank, a lever pivotallyconnected to said ear, anda strap extending over the shoe-last and having its ends connected to said lever, so that the strap may be tightened or loosened upon the shoe-last by operating said lever.

Figure 1 is a side elevation of a shoemakers jack embodying my invention. Fig. 2 is a front view. Fig. 3 is a top plan View of the shoe-last shank. Fig. 4 is'a sectional detail of the joint at the upper end of the standard.

Referring to the drawings in detail, the base 1 is adapted to be rigidly mounted upon the floor. The trunnion 2 extends upwardly from the center of the base and has a groove 4 around its upper end. The standard 3 has a bore in its lower end to receive the trunnion 2, and the screw 5 is inserted through the standard into the groove 4, so as to hold the standard from being withdrawn from the trunnion and at the same time allow the standard to rotate. The standard 3 has a flange extending outwardly around its lower end to rest upon the base 1. A slot 6 is formed in the upper end of the standard 3, the rear side of said slot being closed, as shown in Fig. 4. The coupling 10 has a tongue 9 extending downwardly into the slot 6, there being an angular slotted transverse opening 11 in said tongue, and a pin 12 is inserted through the upper end of the standard and through the slot 11. A stop 7 extends upwardly from the standard into the slot 6 to engage in the notch 8 in the lower end of the tongue 9. The flange 13 extends downwardly from the coupling 10 around theupper end of the standard, said flange serving as a stop when the coupling 10 is bentupon the pin 12, as shown in dotted lines in Fig. l. The shoe-last shank 14 is adaptedto fit against/the upper end of the coupling 10 and has a trunnion similar to the trunnion 2 extending downwardly into a bore in the upper end of the coupling 10, and a screw 15 is inserted through the coupling 10 into the groove in the trunnion, so as to hold the shank from being withdrawn and to allow it to rotate. The cars 16 extend backwardly from the upper end of the coupling 10, and thumb-screws 17 connect said ears to form a clamp to hold the shoe-last shank against rotation. The upper end of the shoelast shank 14 is diamond-shaped -and tapered, as shown in Fig. 3, and the shoe-last 18 is mounted upon said upper end. Au'ear 19 extends forwardly from the shank l l. A leplaced over the shoe-last, and its ends are attached to the lever 20. The pivot through the lever 20 is in front of the line of the buttons which secure the ends of the strap to the lever, so that when the lever is pressed downver 20 is pivoted to the ear, and a strap21'is loo wardly to tighten the strap upon the last it will snap against the shank, and the tension of the strap Will hold it in position.

In the operation of my improved jack the standard 3 maybe rotated upon the trunnion 2 until thelast 18 points in the desired direction. Then in practical operation the last may be readily adjusted and moved from time to time from one position to another by manipulating the thum b-screw 17. The strap may be tightened and loosened upon the Work instantly by raising and lowering the lever 20. The last may be moved to an angle of forty-five degrees, as shown in dotted lines in Fig. 1, by raising the shank and its connection bodily until the lower end of the tongue is released from the stop 7.

The two swivels are of great importance, because they allow the last to be tipped in any desired direction by rotating the standard 3, and then the last maybe rotated to any desired angle by moving the shank 14 in the coupling 10.

I claim In a shoemakers jack, the standard 3 hav- 'ing the slot 6 in its upper end; the rear side of the slot being closed to form a stop; the stop 7 extending upwardly at the front side of the slot 6; the coupling 10 adapted to fit against the upper end of the standard 3; the tongue 9 extending downwardly from the coupling 10 into the slot 6; and having the angular slotted transverse opening 11; the pin 12 inserted through the upper end of the standard and through the opening 11 as required to form a hinged connection between the coupling and the standard; the lower end of said tongue extending downwardly behind the stop '7; and the slotted opening 11 allowing the coupling to be raised to disengage the tongue from the stop 7"; and the flange 13 extending downwardly from the coupling 10 around the upper end of thestandard; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

ISAAC HOLZMARK.

\Vitnesses: t v

ALFRED A. EIoKs, FRANK TURNER. 

